Can I measure some of the road I have travelled? Have I achieved some of the aims that I set myself, if I ever really did one day set myself aims ? Can I say today that I am what I wanted to be in the old days? I don’t ask myself whether the world in which I live answers my aspirations, for as soon as I’ve answered no, I shan’t have the impression of having progressed any further. But does the life I lead in it correspond to what I wanted, to what I expected?
– Georges Perec in Species of Space and Other Pieces, Edited and Translated with an Introduction by John Sturrock, Penguin Twentieth-Century Classics, Penguin Books, 1997.